Dust-cap for tire-valves.



A. E- AKER.

DUST CAP FOR TIRE VALVES.-

. APPLICATION l 'lLED NOV-24. 1911.

Patented June 25, 1918.

Glifouv: 1

ALBERT E. AKER, 0F EIIDORRvDQ'KAR'SAS.

n1 can DUST-CA3? non rran -vasvns.

Specification of Letters Fetent. Fatented Jane 25, 1918..

Application filed November 2 191?. serial as 203,750,

To all whom it may concern 7 Be it known that I, ALBERT E. Anna, a citizen of the United States,residing at El- (lorado, in the county of Butler and State of Kansas, have invented certain new and useful Improvements in Dust-Caps for Tire- Valvcs, of which the following is a specification, reference being had to the accompanying drawings. This invention relates to valves for pneumatic tires, and particularly to a dust cap therefor. With the ordinary inflation valve used on pneumatic tires. :1 greatdeal of time is lost by the motorist in removing thewill lock into place.

2 A further object is to provide a dust cap formed in two sections adapted to be engaged withthe ordinary tire body, the upper section of the cap being detachably engag'ed with the other or base section so that it may be readily removed.

A further object'is to provide a. device of this character which is very simple in construction, may be cheaply made and which may be applied to practically all forms of tire valves.

Other objects will appear'in the course of the following description.

'My invention is illustrated in the accompanying drawings, wherein r v Fi re 1 is-a vertical sectional view of one orm of my improved dust cap;

Fig. 2 is an elevation of the form. illustrated in Fig. 1; I

Fig. 3 is a vertical sectional View ofenother form of dust cap; 1

Fig. 4 is a transverse section on the line 4-% of Fig. 3; and i Fig. 5 is an elevation of the dust cap shown in Fig. 3.

Referring to Figs. 1 and 2, it will be seen that my improved dust cap is formed in two sections, a base section 10 and acap or cover section-11, preferably formed of hard fiber. The base section 10 is interiorly screwthreaded as at 12 to engage with the usual screw-threaded wall of a. tire valve, this silient tongues 18, each tonne-d.

. adapted to engage base section being preferably formed with a many-sided head '13 whereby it may be engaged by a wrench and so screwed down.

tightly upon the screw-threaded. body 1 2' of The outer portion of the base with plurality of the valve. section- 10 is formed longitudinally extending was 15 and projecting from the bottoms of are the radially extending it The outer section or cap iii previously rep? P portion ferred to fits snugly noon the a tion of the base section, thof the cap being reduced. eter, as at 1?, to fitwitn so that the outer face of cap flush with the outer face said tion.

Attached to e any suitable mar.

foration adjacent its lower end, ends of the tongnes he i The perforations in Less tongues are the pin 16 when the cap section 11 is disposed upon the ham section and this engagement holds the cap section 11 upon the section. "When it is desired to remove the cap section 1?. so as to disclose the valve, thetongnes may be pulled away from their. engagement with the p n 16 and then the cap. section maybe easily removed.

Preferably there are two oi? these tongnes 18 diametrically opposite each other and the see groova bent cratw base section is formed with two grooves 31.5

for the guidance of these tongues. Thus when it is desired to remove the cap his only necessary to insert the thumb no neath one of the tongues and the only of the other hand beneath the ot er tongue to spread the tongues apart t en' the cap may be readily rem in plac ing the cap on the base sec it is only necessary to force the cap in? J. when the tongue will spring over the pins It is to be understood that a. dustoap con sistin of the two sections it and ll; is in tended to take the place the ordinary one piece dust cap and to screw valve body, the section to remain ,valve body, while the section 11 may he removed and replaced without allect-ing the section 10.

In Fig. 3 I have shown. another form of my invention and which form ii regard as preferable. in this oonstmotion 1% desig- Elli? upon the hates the base section, which is interiorly valve bodyv and which has its exterior face roughened so that a pair of pliers maybe enga ed with the base to unscrew it. At intervas around the outer end of the base there are formed inwardly extending recesses 21 and slots 22 which extend circum ferentially and open into said recesses from the exterior face of the base. The capsecmetrically opposite points with downwardly i extending recesses 25. These recesses extend a nearly to the shoulder 26 formed at the up per end of the reduced portion of the cap.

-The reduced portion of the cap is also longitudinally grooved as at 27 and disposed 1n the recesses 25 are the outwardly bowed springs 28 which are attached at their upper ends to. the wall of the cap section, these springs extending downward and through slots 29 formed in the shoulder 26 below the recesses 25, these springsextending downward into the grooves 27. Each of these springs is providedat its lower end with an outwardly projecting detent 30 in the form of a pin engageable in one of the slots 22.

With this construction when it is desired to place the dust cap section 23 upon the base section 19, the fingers are used to force the springs 28 inward so as to carry the detents 30 inward into position to be inserted in the grooves 21; then the cap is forced downward until these pins30 spring out into the slots 22. The cap section is thus looked upon the base section. When it is desired to remove the cap section, the springs 28 are compressed thus releasing the pins 30 from the slots 22 and then the cap may be-.withdrawn. "With this con struction itis possible to readily withdraw or replace the capsection without the'necesslty of using both hands. 2

It will be understood, of course, that in both of these forms of my device the base section is not removed troin the valve unless it becomes necessary to change a tire. A de-- of this kind does'away with. the necessity of unscrewing, the usual cap from the valve stem which, as before stated, usually requires the use .ofa tool and which often takes considerable time. The-device is very simple, may be cheaply made and has been I found thoroughly effective in practice.

While I have illustrated particular forms of dust caps, it will be understood that many changes may be made therein without dedefined in the appended claims. Having described my invention, what I claim is 1. A dust cap for the valves of pneumatic tires comprising a base section and a cap section, the base section being interior'ly screw-threaded to engage with the valve stem of a'pneumatic tire, one of said sections having a reduced portion over whichthe other section fits, said'ibase section being formed with longitudinal grooves, and

resilient detents mounted upon the cap section, fitting in said grooves, and detachably engaging the base section.-

2. A dust cap for the valves of pneumatic tirescomprising a base section interiorly screw-threaded to engage the body of the valve and formed with longitudinal grooves on its inside face and circumferential slots opening into said grooves from the outside face, and a cap sect-ion reduced at one end to fit within the base section and having resilient "tongues mounted upon it and formed with detents, the tongues being adapted to be received in said grooves and the detents in theslots.

3. A dust cap'i'or the valves or pneumatic tires comprising an interiorly screw-thread ed base'section formed with grooves extending inward from one end, the grooves open-'- ing upon the inside face of the base, the. base being also formed with circumferentially extending slots opening from the face of the and grooves and formed with outwardly projecting detents adapted to engage in said slots in thelbase section when the capsection is forced home into the base section.

In testimony whereof I hereunto afi'lx my signature in the presence of two. witnesses.

ALBERT E, A'Knrt, Witnesses:

JOHN C. Hora, Bnssm MGOLURE. 

